Daniel 4:32-33

32and they shall drive thee from men, and thy dwelling shall be with the beasts of the field; they shall make thee to eat grass as oxen, and seven times shall pass over thee, until thou know that the Most High ruleth over the kingdom of men, and giveth it to whomsoever he will.

33The same hour was the word fulfilled upon Nebuchadnezzar; and he was driven from men, and ate grass as oxen; and his body was bathed with the dew of heaven, till his hair grew like eagles' [feathers], and his nails like birds' [claws].